This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 11 |
| 5 | 33 |
| 6 | 77 |
| 7 | 161 |
| 8 | 319 |
| 9 | 613 |
| 10 | 1157 |
| 11 | 2161 |
| 12 | 4011 |
| 13 | 7417 |
| 14 | 13685 |
| 15 | 25217 |
| 16 | 46431 |
| 17 | 85453 |
| 18 | 157229 |
| 19 | 289249 |
| 20 | 532075 |
| 21 | 978705 |
| 22 | 1800189 |
| 23 | 3311137 |
| 24 | 6090207 |
| 25 | 11201717 |
| 26 | 20603253 |
| 27 | 37895377 |
| 28 | 69700555 |
| 29 | 128199401 |
| 30 | 235795557 |
| 31 | 433695745 |
| 32 | 797690943 |